Vortex Flowmeter
Model ALVT Series
GENERAL
Vortex flow sensing technology relies on measuring the number of vortex pulses generated. by a bluff body immersed in the flow stream. The Vortex meter uses dual sensor. technology, producing two independent vortex signals which allows for signal amplification and common mode noise reduction. Our sensors never touch the process fluid; the crystal sensors are bonded behind a stainless steel wall.
The electronics pick up the slightest pressure pulsations generated by the vortices through the stainless steel wall. This design allows meters to have an extremely wide turndown while maintaining an almost unlimited upper end and a high pressure rating. Our sensor is the thinnest wafer vortex on the market. The meter body bolt lengths are shorter to allow for better flange alignment and tighter, leak-free installations.
FEATURES
• Suitable for a wide variety of applications with steam, gas, and liquid medias
• No moving parts and no leak paths; no o-ring or graph oil seals to wear, fail or leak
• Two independent sensors , allowing for better signal amplification and noise reduction
• Error messages displayed for or erratic flows and flows outside of calibrated ranges
• Field calibration possible with integral or remote electronics and keypad
• True 2-wire 4-20 mA interface
• Wide measuring range, turn-down ratio of 10:1
• Available and an integrated mass flow vortex
• Weather proof multi-pole connector for power, signal and serial interface
• Area of measurement can be smaller than pipe connection for
better rangeability
SPECIFICATION
• Process Connections: wafer, flanged
• Process temperature: -40~+350℃
• Operating pressure: 1.6MPa -std; up to 6.4 Mpa -opt
• Velocity Range:
- Liquids: 0.7~7 m/s -std 0 .3~7 m/s -opt
- Gas & Steam: 6~60 m/s -std 4~70 m/s -opt
• Accuracy 1.0% of reading
• Repeatability: 0.33% for liquid, 0.5% for gas/steam
• Turn down ratio 10:1
• Material: SS304 -std SS316 -opt
• Signal output: pulse output, 2-wire 4~20mADC
• RAM Back-up lithium battery, 3.6VDC
• Housing protection: IP65; IP67
• Ex-protection: exid ⅡB T4; exib ⅡC T 4
• Cable: standard 5m for remote version
• weight (approximate):
- wafer: 10 ~ 13kg to DN300
- flange: flange weight contact factory
• Signal Interface: RS485, HART
• Enginetr units: m3/h, kg/hr, ton/hr
• Keypad: rate, total
• Power supply: isolated 13.5~45 VDC
• NIST traceable: YES
• Data storage: EPROM storage up to 5 years
• Data logger: reading, sampling Times 0.5 S
Download: CATALOG